Related Experiment Videos

C-reactive protein, genetically elevated levels and risk of ischemic heart and cerebrovascular disease

Jeppe Zacho1, Anne Tybjaerg-Hansen, Børge Grønne Nordestgaard

  • 1Department of Clinical Biochemistry, The Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, Copenhagen, Denmark.

Scandinavian Journal of Clinical and Laboratory Investigation
|June 18, 2009
PubMed

Insights

Genetically elevated C-reactive protein (CRP) levels did not increase the risk of heart or cerebrovascular disease, despite associations between higher CRP levels and increased disease risk. This study investigated the causal link between CRP and cardiovascular outcomes.

Area of Science:

  • Cardiovascular Science
  • Genetics
  • Biomarkers

Background:

  • C-reactive protein (CRP) is a marker of inflammation.
  • Elevated CRP levels are associated with increased risk of ischemic heart disease and cerebrovascular disease.
  • The causal role of CRP in these conditions remains unclear.

Purpose of the Study:

  • To investigate whether genetically elevated C-reactive protein (CRP) levels causally increase the risk of ischemic heart disease and ischemic cerebrovascular disease.
  • To compare the observed risks with theoretically predicted risks based on genetic predisposition.

Main Methods:

  • Utilized genetic polymorphisms associated with CRP levels to create a genetically elevated CRP model.
  • Compared the risk of ischemic heart disease and cerebrovascular disease in individuals with genetically elevated CRP versus controls.
  • Analyzed associations between CRP levels and disease risk.

Main Results:

  • Higher CRP levels (>3mg/L) were associated with increased risk (1.6-fold for heart disease, 1.3-fold for cerebrovascular disease).
  • Genotype combinations predicted up to a 64% increase in CRP levels.
  • Despite theoretical predictions, these genotype combinations did not associate with increased risk of ischemic heart or cerebrovascular disease.

Conclusions:

  • Genetically elevated CRP levels do not appear to causally increase the risk of ischemic heart disease or cerebrovascular disease.
  • The observed association between higher CRP levels and increased disease risk may be confounded by other factors.
  • Further research is needed to elucidate the complex relationship between inflammation, CRP, and cardiovascular outcomes.

Related Concept Videos

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...